Angioplasty catheter
First Claim
1. A laser angioplasty catheter device comprisinga catheter having a distal end portion adapted to be inserted within a blood vessel and a proximal end portion,an abutment extending radially from the outer surface of the catheter adjacent the distal end portion thereof,a fiber optic extending within the interior of the catheter from the proximal end portion thereof to adjacent the distal end portion of the catheter to deliver laser energy into the blood vessel when the fiber optic is connected to a source of laser energy,an inflatable bladder mounted on the catheter adjacent the distal end portion thereof disposed substantially opposite to the abutment, andmeans for controllably inflating the bladder when the device is disposed in a blood vessel to enable the inflated bladder to contact the inner surface of the blood vessel and urge the abutment against the inner surface of the blood vessel adjacent thereto,whereby the laser energy is adapted to cause excision of undesired material within the blood vessel when the distal end portion of the catheter is disposed adjacent the undesired material without the laser energy being applied to the inner surface of the blood vessel
4 Assignments
0 Petitions
Accused Products
Abstract
The disclosure relates to a device for use in removing undesired material from a duct within a patient'"'"'s body. The device comprises a catheter adapted to be disposed within a duct an an element disposed adjacent to the distal end portion of the catheter such as a fiber optic emitting laser energy, a heated element or a knife for intersecting and releasing the undesired material. The undesired material may be an occlusion or an accumulation of plaque within a blood vessel. An inflatable bladder is provided for positioning the distal end portion of the catheter adjacent the inner surface of the duct to maintain the element for intersecting and releasing the undesired material adjacent thereto. The device can also include a pair of abutments disposed adjacent the distal end portion of the catheter to form a chamber adjacent the inner surface of the blood vessel and prevent the escape of laser energy after it has been applied to the undesired material.
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Citations
9 Claims
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1. A laser angioplasty catheter device comprising
a catheter having a distal end portion adapted to be inserted within a blood vessel and a proximal end portion, an abutment extending radially from the outer surface of the catheter adjacent the distal end portion thereof, a fiber optic extending within the interior of the catheter from the proximal end portion thereof to adjacent the distal end portion of the catheter to deliver laser energy into the blood vessel when the fiber optic is connected to a source of laser energy, an inflatable bladder mounted on the catheter adjacent the distal end portion thereof disposed substantially opposite to the abutment, and means for controllably inflating the bladder when the device is disposed in a blood vessel to enable the inflated bladder to contact the inner surface of the blood vessel and urge the abutment against the inner surface of the blood vessel adjacent thereto, whereby the laser energy is adapted to cause excision of undesired material within the blood vessel when the distal end portion of the catheter is disposed adjacent the undesired material without the laser energy being applied to the inner surface of the blood vessel
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7. A catheter device for use in removing undesired material from a duct within a patient'"'"'s body comprising:
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a catheter adapted to be inserted within a duct in the patient'"'"'s body, the catheter having a proximal end portion and a distal end portion, means disposed adjacent the distal end portion of the catheter for intersecting and releasing undesired material from the interior of the duct in the patient'"'"'s body when the distal end portion of the catheter is disposed adjacent to the undesired material, an inflatable bladder mounted on the catheter adjacent the distal end portion thereof and disposed substantially opposite the intersecting and releasing means, means for controllably inflating the bladder when the device is disposed in the duct to enable the inflated bladder to contact the inner surface of the duct and urge the distal end portion of the catheter against the inner surface of the duct adjacent thereto, and an abutment extending radially from the outer surface of the catheter adjacent the distal end portion thereof and disposed substantially opposite to the inflatable bladder, the bladder when inflated being adapted to urge the abutment against the inner surface of the duct, whereby the means for intersecting and releasing the undesired material is positioned adjacent to the inner surface of the duct. - View Dependent Claims (8, 9)
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Specification